Strength enhancements induced during cold forming of stainless steel sections
Strength enhancements induced during cold forming of stainless steel sections
复制标题
DOI：
10.1016/j.jcsr.2008.04.014
复制
发表时间：
2008-11-01
影响因子：
4.1
通讯作者：
Gardner, Leroy
中科院分区：
文献类型：
--
作者：
Cruise, Rachel B.;Gardner, Leroy
不锈钢的材料特性对塑性变形敏感，塑性变形通过称为冷加工的工艺导致屈服强度增加。在制造过程中，冷成形横截面周围经历的不同应变路径为来自不同成形路线的截面产生独特的材料强度分布，并且还影响残余应力模式。本文提出的研究计划已实验研究的材料和残余应力分布中发现的两种类型的冷弯型材-冷轧箱形截面和压力制动角。已经提出了利用观察到的强度增强的预测工具，并将其纳入模型。随后的比较表明，这些强度增强，特别是那些观察到的冷轧箱形截面，应在结构设计中使用，以避免大大低估构件的阻力。(C)2008爱思唯尔有限公司保留所有权利。
The material properties of stainless steel are sensitive to plastic deformation which causes an increase in yield strength by a process termed cold working. The different strain paths experienced around cold-formed cross sections during manufacture create unique material strength distributions for sections from different forming routes and also influence residual stress patterns. The research program presented herein has examined experimentally the material and residual stress distributions found in two types of cold-formed sections-cold-rolled box sections and press-braked angles. Predictive tools to harness the observed strength enhancements have been proposed and incorporated into models. Subsequent comparisons have shown that these strength enhancements, in particular those observed for cold-rolled box sections, should be employed in structural design to avoid considerable underestimation of member resistance. (C) 2008 Elsevier Ltd. All rights reserved.